Updated CTAssetsPickerController to 2.2.2, WordPress-iOS-Shared to 0.0.2, and WordPressCom-Stats-iOS to 0.0.2; Moved UIImage+Util category into shared pod.
Updated import statement for UIImage+Util category.
Merge pull request #1834 from wordpress-mobile/feature/update-shared-pod

Updated WordPress-iOS-Shared,  WordPressCom-Stats-iOS, and  CTAssetsPickerController Cocoapods